Door-closer



(No Model.)

J. M DONALD.

DOOR CLOSER.

No. 316,283. I I Patented Apr. 21, 1885.

ONES\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\N O nmlllll WITNESSES INVENTOR:

ATTORNEYS.

JOHN MCDONALD, OF MIDDLETOWN, ASSIGNOR TO HIMSELF AND GEORGE M.MCDONALD, OF HARVEYSBURG, OHIO.

DOOR-CLOSER.

SPECIFICATION forming part of Letters Patent No. 316,283, dated April21, 1885.

Application filed June 26, 1884. (No model.)

To all whom it may concern;

Be it known that 1, JOHN MCDONALD, ofMiddletown, in the county of Butlerand State of Ohio, have invented anew and useful Improvement in Gate andDoor Closers, of which the following is a full, clear, and exactdescription, reference being had to the annexed drawings, in which-Figure l is a side elevation of a door and frame showing my inventien.Fig. 2 is an edge view of the same; and Fig. 3 is a' modification.

A indicates the door, and B the door-frame, to which the former ishinged.

[5 To the door-frame behind the door are secured two brackets, O O, inwhich are journaled the ends of a vertical cylindrical bearing-block, D.In this bearing-block is journaled a transverse shaft, E, passingthrough the middle thereof at right angles to the plane of the door, andto the inner end of the shaft E is secured an arm, F, carrying anadjustable weight, G, which arm is arranged parallel to the plane of thedoor. The outer end of the shaft E is provided with a crank, H, which isconnected by means of a link or bar, I, with a support, J secured to thedoor.

With this construction. as the door is opened the link I rotates thebearing-block to turn the weight out of the way of the door, and at thesame time turns the crank to lift the weight to a position for acting onand closing the door.

Instead of making the device a separate attachment applicable to anydoor, as in the form above described, it may be made in one piece withthe door-hinge, as shown in Fig. 3, in which case the part K of thehinge is pro vided with ears L for supporting the bearingblock D, andthe link 'I is connected to a pro- 0 jection, M, on the part N of thehinge.

The general arrangement of the several parts of the device may also bemodified without departing from the spirit of the invention.

What I claim is 1. The combination of a rotary bearingblock, acrank-shaft journaled transversely in said block, a weight attached toone end of said shaft, and means, substantially as described, forconnecting the crankshaft with a door, substantially as and for thepurpose specified.

2. The combination, with a hinge, of a rotary bearing-block supported inconnection with a part of the hinge, a weighted crank.- shaft journaledin said block, and a pivoted link connecting the crank of said shaftwith another part of said hinge, substantially as shown and described,and for the purpose specified.

JOHN MCDONALD.

Witnesses:

A. G. LYNE, SoLoN O. KEMON.

